INVENTOR P8MVI32-09WiFi, Руководство по обслуживанию

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6.7 Re-installation while the outdoor unit
need to be repaired
1. Evacuation for the whole system
Procedure:
1).Confirm that both the 2-way and 3-way
valves are set to the opened position.
2).Connect the vacuum pump to 3-way
valve’s service port.
3).Evacuation for approximately one hour.
Confirm that the compound meter indicates
-0.1Mpa.
4).Close the valve (Low side) on the charge
set, turn off the vacuum pump, and confirm
that the gauge needle does not move
(approximately 5 minutes after turning off
the vacuum pump).
5).Disconnect the charge hose from the
vacuum pump.
2. Refrigerant charging
Procedure:
1). Connect the charge hose to the
charging cylinder, open the 2-way valve
and the 3-way valve
Connect the charge hose which you
disconnected from the vacuum pump to
the valve at the bottom of the cylinder.
Make the cylinder bottom up to ensure
liquid charge.
2). Purge the air from the charge hose
Open the valve at the bottom of the
cylinder and press the check valve on the
charge set to purge the air (be careful of
the liquid refrigerant).
3) Put the charging cylinder onto the
electronic scale and record the weight.
4). Open the valves (Low side) on the
charge set and charge the system with
liquid refrigerant
If the system cannot be charge with the
specified amount of refrigerant, or can be
charged with a little at a time
(approximately 150g each time) , operating
the air conditioner in the cooling cycle;
however, one time is not sufficient, wait
approximately 1 minute and then repeat the
procedure.
5).When the electronic scale displays the
proper weight, disconnect the charge hose
from the 3-way valve’s service port
immediately
If the system has been charged with liquid
refrigerant while operating the air
conditioner, turn off the air conditioner
before disconnecting the hose.
6). Mounted the valve stem caps and the
service port
Use torque wrench to tighten the service
port cap to a torque of 18N.m.
Be sure to check for gas leakage.